Year-over-year change in vehicle miles traveled vs. the
year-over-year change in GDP.

As you can see, there's something very unusual taking place right
now: we've never had a drop in vehicle miles traveled like this
at a time when GDP is moving higher.

Red is 12-month total vehicle miles traveled. Blue is
GDP.

UPDATE:

Here's a chart that explains a lot. It looks at the year over
year change in vehicle miles traveled (red line) vs. the
year-over-year change (inversed) in the population that's Not In
Labor Force. Now we start to see a convergence.